ICD-10 Code for Myoclonus
Also indexed as (familial) (essential) (multifocal) (simplex)
The ICD-10-CM code for myoclonus is G25.3 — Myoclonus. This is the code the Alphabetic Index gives for myoclonus with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Billable
Which myoclonus code should you use?
The Alphabetic Index lists 5 codes under Myoclonus, myoclonic, myoclonia. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| drug-induced | G25.3 | Myoclonus |
| epilepsy | G40.4Not billable | Other generalized epilepsy and epileptic syndromes |
| epileptica | G40.409 | Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus |
| facial | G51.3Not billable | Clonic hemifacial spasm |
| familial progressive | G25.3 | Myoclonus |
| Friedreich's | G25.3 | Myoclonus |
| jerks | G25.3 | Myoclonus |
| massive | G25.3 | Myoclonus |
| palatal | G25.3 | Myoclonus |
| pharyngeal | G25.3 | Myoclonus |
Myoclonus epileptica
| with status epilepticus | G40.401 | Other generalized epilepsy and epileptic syndromes, not intractable, with status epilepticus |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources